{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54197",
    "entityType": "User",
    "nonce": "0x273dcfde304393e9df604cb6c6923d66f81938b753e31fcc31a8ebd5e47d9203",
    "signature": "0xd0af30ede060c0ed2ac8044067bac72bedc736c8931adefcead5db0e07c73bd465db43122881a18f8b466ee5a27419ff34c4a94381e287fd45c41d8135027b421b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}